GM Service Manual Online
For 1990-2009 cars only

Wheel Speed Sensor Jumper Harness Replacement Left Front

Removal Procedure


    Object Number: 531609  Size: SH

    Important: The wheel speed sensor wiring is included in the engine harness. The wiring between the wheel speed sensor and the heat shrink sealed splices is high-flex cable and must not be repaired or spliced. This procedure replaces the high-flex cable with a jumper harness from a supplied repair kit.

  1. Turn OFF the ignition.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the left front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Remove the wheel speed sensor connector (7) from the wheel speed sensor (6).
  5. Remove the harness grommet (3) from the strut bracket (5).
  6. Remove the harness grommet (1) from the rail bracket (2).
  7. Remove the harness clip (4) from the rail bracket (2).
  8. Route the wheel speed sensor wiring (8) through the top of the engine compartment.
  9. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  10. Object Number: 531617  Size: SH
  11. Cut the engine harness conduit (1) at the shown location.
  12. Locate the 2 heat shrink sealed splices.
  13. Important: Leave a sufficient amount of wiring so that the new jumper terminals can be assembled.

  14. Cut the 2 twisted dark blue and yellow wires on the engine side of the splices.
  15. Remove the wheel speed sensor wiring from the engine harness.

Installation Procedure


    Object Number: 531612  Size: SH

    Important: Maintain the twisting of the wheel speed sensor wires.

  1. Install the terminals (2) and cable seals (3) to the engine side of the wire. Refer to Wiring Repairs in Wiring Systems.
  2. Install the connector (1) and terminal position assurance (4) to the engine side of the wire. Refer to Wiring Repairs in Wiring Systems.

  3. Object Number: 531621  Size: SH
  4. Install the wheel speed sensor jumper connector (2) to the assembled connector (3).
  5. Route the wheel speed sensor jumper (1) through the engine compartment to the wheel well.

  6. Object Number: 531609  Size: SH
  7. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  8. Install the wheel speed sensor connector (7) to the wheel speed sensor (6).
  9. Install the harness grommet (3) to the strut bracket (5).
  10. Install the harness grommet (1) to the rail bracket (2).
  11. Install the harness clip (4) the rail bracket (2).
  12. Install the left front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  13. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  14. Perform the ABS Diagnostic System Check. Refer to Diagnostic System Check - ABS .

Wheel Speed Sensor Jumper Harness Replacement Right Front

Removal Procedure


    Object Number: 531609  Size: SH

    Important: The wheel speed sensor wiring is included in the engine harness. The wiring between the wheel speed sensor and the heat shrink sealed splices is high-flex cable and must not be repaired or spliced. This procedure replaces the high-flex cable with a jumper harness from a supplied repair kit.

  1. Turn OFF the ignition.
  2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the right front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Remove the wheel speed sensor connector (7) from the wheel speed sensor (6).
  5. Remove the harness grommet (3) from the strut bracket (5).
  6. Remove the harness grommet (1) from the rail bracket (2).
  7. Remove the harness clip (4) from the rail bracket (2).

  8. Object Number: 531625  Size: SH
  9. Cut the engine harness conduit (1) at the shown location.
  10. Important: Make the cut as close to the harness breakout as possible.

  11. Cut the 2 twisted wires on the engine side of the 2 heat shrink sealed splices.
  12. Remove the wheel speed sensor wiring from the engine harness.
  13. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.

  14. Object Number: 531630  Size: SH
  15. Cut the engine harness conduit (1) at the shown location.
  16. Important: Leave a sufficient amount of wiring so that the new jumper terminals can be assembled.

  17. Cut the 2 twisted dark green and tan wires.
  18. Pull the ends of the wires on the engine side out of the conduit.

Installation Procedure


    Object Number: 531612  Size: SH

    Important: Maintain the twisting of the wheel speed sensor wires.

  1. Install the terminals (2) and cable seals (3) to the engine side of the wire. Refer to Wiring Repairs in Wiring Systems.
  2. Install the connector (1) and terminal position assurance (4) to the engine side of the wire. Refer to Wiring Repairs in Wiring Systems.

  3. Object Number: 531634  Size: SH
  4. Install the wheel speed sensor jumper connector (1) to the assembled connector (2).
  5. Cut the tape on the wheel speed senor jumper (4).
  6. Route the wheel speed sensor jumper (4) through the engine compartment to the wheel well.

  7. Object Number: 531635  Size: SH
  8. Using the strap (1), secure the wheel speed sensor jumper (2) to the HVAC lines (3).

  9. Object Number: 531609  Size: SH
  10. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  11. Install the wheel speed sensor connector (7) to the wheel speed sensor (6).
  12. Install the harness grommet (3) to the strut bracket (5).
  13. Install the harness grommet (1) to the rail bracket (2).
  14. Install the harness clip (4) to the rail bracket (2).
  15. Install the right front wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  16. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  17. Perform the ABS Diagnostic System Check. Refer to Diagnostic System Check - ABS .